下降 (Descend) refers to the action of moving downward from a higher position to a lower one. This can occur in various contexts, such as when an airplane aircraft lands, or when a person walks down a staircase. The term can also describe natural phenomena, like the descent of a mountain landform or the falling of leaves from trees in autumn. In mathematics, 下降 can describe a decrease in value, such as when a stock price financial asset drops. In everyday language, it can refer to a decline in performance or quality, like when a student's grades academic performance fall. Overall, the concept of descending is associated with downward movement or reduction.